Simple past tense and past participle of thunder.(verb)
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Use "thundered" in a sentence
"Wind howled, trees bent, and in thundered a great brass mechanism that looked like nothing so much as a giant mortar on legs like those of the house."
"I remember several December mornings when I stood shivering on the platform at Etobicoke North, watching as a higher-priority VIA train thundered by."
"He never got it finished, because Stalin thundered in his face, "When I say" No, "I mean NO!""